A Modification of the current one would work actually. Pop that HP on east into Alaska and get rid of any semblance of a GOA Low and strengthen Blocking upstream. That way the Clipper's and Miller B's would travel further South.
The worry of a complete reshuffle is we never get back to a base Eastern Trough.
What's really needed is a tall Western Ridge connecting with, in conjunction with or connecting with the Alaskan HP. A -AO as well.
Another, although not neccesary but helps, is formidable blocking in the NAO Domain, preferably with a 50-50 or thereabouts Low. That would work for us. An active STJ in the Mix would raise the odds for heavy Snowfalls.
It has been weak or lacking in those Area's during this cold Stretch.